html errors seo

seo places say there are errors

[shtfm]

I am new here lots of information thank you.

I need to know what type of SEO errors on the HTML are at this location seo says some html errors here [shtfmilitia.com...]

What do they mean errors or can i just ignore them ?

[Demaestro]

If they are talking about being standards compliant then there are 145 errors. Mostly invalid markup.

You can check it yourself here:

[validator.w3.org...]

Just put in your URL and click "CHECK"