This is great for getting backlinks at will, fast

Anyone used this? Sounds a bit black hat to me

But, if it gets reported in Akismat plugin, all these comments won't count as they will caught by the spam filter. But, you have a chance if any wordpress blog is not using this plugin.

The comments will get blocked by the spam filter and it seems like a black hat technique to me.

Wow! This is definitely a Black hat. This is very dangerous if you want your site to stay on the loop. And you will get block by the spam filter so it may not have any use. Does anyone used this?

Oling

only use it if you can afford to lose the site and want to achieve that outcome as quickly as possible.