If you are going to build a website and/or blog wherein you expect to sell a product, promote yourself or your skills, or in any way get people to view your web page more than once, I have two words for you:
Now, I don't want to present myself as the English Nazi, but misspellings and misuse of grammar is a serious pet peeve of mine. Seriously folks, the spell check button is there for a reason.
If you're still using a Cray-2 Supercomputer sans MS Word, then consider having a friend/ relative/ English teacher review your e-comm site before sending your purses/ blankies/ earrings out into the interwebz.
You may have the cutest product out there, but you lose at least 15 cool points (and more than likely, a customer) when I see words like "their" misspelled.
Your Friendly Neighborhood Spelling Nazi