I've tried out the demo version, and I would like to review it.

It's a very nice app, the design is user-friendly.

Instant download, no need to leave email/name: want to try it out - go ahead.

Scrunity checks links, SEO stuff, HTML validation, generates an XML sitemap.

300 links were found for a tiny website I checked in less than two minutes, so the tool is really fast. These were both back links and internal links. 239 of them were reported as bad, mostly these were 404 error internal links. Thank, Scrunity, I'll fix that! So Scrunity found 61 backlinks to my website - pretty much the same I used to detect with yahoo site explorer.

Btw, where does Scrunity get back links from?

Then I moved to the Sitemap option. I liked the "only include checked and followed urls in sitemaps" option. Also you can set up the default change frequency (the same option to all pages only, I guess - please correct me if I'm wrong) and priority (that was marked as automatic only, maybe because of the demo version).

In the SEO section you get info on page title, url, description, keywords, main headings. All is accurate.

HTML validation states valid/invalid/abort, or, abundant in my case, "the request timed out".

Thanks for the great tool, I think webmasters who don't need advanced options, a variety of xml sitemap generation option to choose from, can make great use of it to spot main on page problems and remove obstacles to high rankings! I personally was amazed by the number of 404's found :)

This app is similar to TweetDeck for Twitter, and it works without faults. But all in all, I find both of them quite annoying and distracting. If social media marketing is not your full-time job, I wouldn't recommend to have it.