Now, I'm no expert on the music industry. But I've been a student of the game for a long time. Hell, I've even gone on a bit of a mini tour when I was younger so I'd like to think I know a little bit. Sadly, most of what I know is based on mistakes. The same mistake that a lot of you guys are making. So check it:
Hip hop is the most image based that it's ever been. If your image ain't right, no one's gonna give you a shot. Plus, the day of the every-man is gone. The odds of a modern day Nas blowing up is unlikely. Danny Brown is actually very down to earth, but it wasn't until he got that weird haircut and started dressing funky that he started to get a name. People don't really care much for relatable characters anymore. They want larger than life, ridiculous, obnoxious, even scary. They don't wanna listen to Ron from down the block who's still broke to remind them that they're broke. Hip hop is escapism for most part.
Ultimately, my point is that most dudes spamming the music forum don't have a strong image. You don't have a presence. You don't have a niche or a movement. You still seem like the same 100 dudes who wanna rap that you went to high school with. Some might even be skillful. You just lack the charisma to attract your attention.
Here's some tips:
Look professional. Don't just have a soundclick. Have an actual website. Hostbaby will give you a template based music page for like $10 a month. Don't make your tumblr your main site. You'll blend into the background noise. Don't make music videos with your iphone unless that's like part of your image to intentionally look broke and ridiculous. Otherwise, put out an ad in your local college and look for a student itching to use his camera to get some experience. I'm offering advice for how to do it on the cheap. But if you got the dough, pay someone to make a legit video. Someone who really knows how to use a camera and knows how to edit. Record in a legit studio and at the least get someone to mix it down properly.
Don't twitter spam people or youtube spam. Word of mouth is powerful. Get fans, get em to follow you on twitter, respond to the fans. They'll want to spread the word. Again, just throwing out ideas. Be likeable. Don't be annoying. Use proper marketing.
Have a solid image. ASAP blew up because they had a strong image. Trinidad James had a strong image. Action Bronson had a strong presence/image. Tyler and Wolf Gang had a strong image. Problem with 90% of y'all is that your image is simply an imitation of someone else who's already famous. We don't need another Kanye or Drake. We don't need another Rocky, we don't need another Lupe.
Be unique. If you sound, dress, look, act, talk, wanna be like someone else, your best will still only be an imitation of someone else who's already established themselves as better. Be the best YOU. And if the best you is just a trend hopping imitation, quit the game and make it a hobby. Like I said, the world doesn't need more copies of artists that already exist.
Have other people promo you. Doing your own promo only makes you look like the next bum ass dude hawkin his blank CD at the gas station. And when they promo you, make sure they know what they're doing. You come on strong and keep an aura of mystery a la ASAP mob, or just flood the market with a ton of material like Lil B. In the first scenario, you'll have people waiting for more. In the second scenario, there's enough material for people to really get a feel for everything you do and they can pretty much play your music all day (you want that).
Have a proper plan of attack and execute. Don't just make music and say, yo peep this everyone! SPAM SPAM SPAM!!! Have a means to really make people draw the connection between you and the music. That's very important. When people hear your music, they should know who it is. Plan it out. For example, "first I'm a make like 4 tracks. It's gonna be all party music. Just reckless youth music. So then I'm a release a quick teaser video with clips of the random house parties we go to. Then I'm a drop the full length music video. Then I'm a drop the EP for free. Six full tracks. Then I'm a start booking shows." You can do it your own way. I'm just saying this as an example. You can do it your own way. Just make sure you have a plan. The days of the rapper simply making music and having people like/dislike it are over. You either have to have a team or you gotta be your own team and handle your own everything. If you're disorganized you will always fizzle out and remain a soundclick musician.
By the way, I'm not mentioning rappers based on my like for them. I'm not a huge fan of any of the guys I mentioned, but I respect the hell out of their marketing. They built a great plan of attack and made it happen.
Imitate success. Don't imitate who they are, but imitate what they've done.
I hope this helps.