The people from the Stands4 network (which has produced sites such as Abbreviations.com and References.net) has produced a new site to add to the ever growing stable, and it's Grammar.com. As you'd expect, it's a site all about grammar - you can cut and paste your own content to have it checked for spelling errors or grammar suggestions. You can choose your language - I was impressed that there are six versions of English - American, British, South African, Australian, New Zealand and Canadian, as well as a rich variety of others. There are several other sections to the site - a collection of frequently misspelled words, common grammatical mistakes, parts of speech, vocabulary building, punctuation and few fun sections as well.
It's a very useful site if you're bashing out a blog post and you just want to check that everything is as it should be, if you have a concern over 'affect or effect' for example, or you're a parent who wants to point their child to an excellent reference tool.
As with all of the other Stands4 sites it does an excellent job and would be a real addition to any quick reference collection.