I'm new posting here, but i have read the forums over and over. Anyway I'm having problems getting my backlinks built up. Although i know the methods that are most commonly mentioned, commenting on do-follow blogs, forums and so on i still seem to have problems finding the place to leave the link. I don't really know how to go about finding blogs in my same niche or forums even, which is where i'm running into a problem. The other thing is since i'm new to all this, after i post a link on a do-follow or get posted on an online database how long does it usually take for a search engine to see that link and give it weight?