Scrape box is probably the best for what you want to do. A word of cation though, doing manual blog comment is much more effective.

If you just go spamming tons of blogs with the same comments you are not going to get a big bennifit.

You should use scrapebox to find good blogs to post on and then do it manually. You can get some high pr links doing it this way. Write useful comments that are more than one liners. Add value to the blog and you will be rewarded.

Here are two dofollow ones:
IntenseDebate - Signup
Discover your community - DISQUS

I would say ScrapeBox also. If you search on Google you can find it for a discounted price too.

Thank you Everyone! This helps a lot! I will check out Scrapbox. I knew there had to be someone who made this kind of software.

no need to reply! Just bought scrapbox and it looks awesome! Can't wait to use it!!!

No point looking for other alternatives. Scrapebox is the one and only!

Make sure you checkout this channel on youtube to get some real efective ideas on how to use it.
YouTube - ScrapeBoxBlueprint's Channel

Scrapebox is definitely a great tool but there's better ones out there. When used properly, you can get links that will stick and bring you traffic. I have some FFA blogs and OMG, it's riduculous the stuff that gets posted... LOL

Hi! This is nice publish, will come back week, added to Digg for more information!

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If you're going to use scrapebox, get paid proxies, about $20 per month.

I will vote for scrapebox....it's the best