An untapped area is question and answers websites. Well kinda untapped.
Forums... article marketing... forum profiles..directory submissions.. blog comments are the usual seo people do for new and old sites.
But i want to make sure you are all using question and answer websites.
The reason being...
- Content is relevant to the backlinks
- High page rank sites
- Lots of traffic
- People using question and answers websites can't find their answers on google
- Once your link is on the site it lasts and brings a constant flow of traffic
These are question and answer websites i found that are general niches... So there should be something for everybody to get you all started!
A good bet would be to search a question.. and see if it ranks high in google... try answer it.. and your link will be ranked high!
I have got best results from blurtit and yahoo answers.