Best way to reinvest?
 

I want to reinvest my blog profits back into the site. What do you think would be the best? Should I buy hardlinks, traffic or what?

traaaaaaaaaaaaaaaaffffic!

who is best?

i would definitely go with traffic.
without traffic you don't get any money in the first place.

and it is possible to make money with traffic that you buy ? (you can convert with this "low conversion" traffic for $.25 per 1000 ?)

Ok so what kind of traffic would you buy?

I would say more content to keep your members happy, depending on how many members you have though.

As long as you have solid conversion ratios I would invest it in traffic. I would probably split it up and buy from a few different sources and compare the results.

Its a blog :)

traffic i would say
try to get from many different sources, compare, and then continue to buy from the one giving best results for your site