I started using blankslate because the standard themes were to heavy and I wanted something easy to edit.
Blankslate is very easy to adapt and my only problem with the theme is that it uses tags like <article>, <figure> or <figcaption> in the functions.php file. With newer versions firefox and ie this is fine but with older versions of ie this really messes up the display. It effects people who use ie 8.0 and under which is about 12% for me, enough to want to change it.
It took a while to find the problems but I changed the tags back to the standard <div> tags and every thing works fine.
Also in the comments.php file I had to change id="respond" to class"respond" because as most people know you can't have more than one id with the same name in an HTML file.
Overall I am very pleased with the theme and credit and link to the Tidy Themes website on my site.