Test everything is a wonderful tool which has a collection of all tools required to benchmark a website. You will find it useful to inspect your competitor website with yours. You can test statistics like seo, social popularity, design issues, network performance…
Hiding text in order that visitors can identify it but hiding the same in the eyes of bots comes under white hat and we are NOT discussing something related with black hat SEO. This becomes necessary when you need to leave your mail ids in open forums.
Here is how you can access all your stumbleupon favorites on your browser’s address bar. Just type the topic you are looking and the result appears instantly. Import all your stumble favorites into your firefox and access all instantly.
Character count has to be limited while entering some online forms or tweeting, texting or while entering meta tags for a web page. Here is a free online tool where you can easily find the number of characters, words and lines.
If you want to get a hyperlink, its worth only when it is not a nofollow link. Here is the easiest way to test if the links are nofollow or dofollow.