Well meta tags will be always helpful to get the best advantage for your website as there are multiple reason where you have to work with the technique which helps to gain your complete benefit from it.
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<META NAME="author" CONTENT="">
<META NAME="subject" CONTENT="">
<META NAME="Description" CONTENT="">
<META NAME="Classification" CONTENT="">
<META NAME="Keywords" CONTENT="">
<META NAME="Geography" CONTENT="">
<META NAME="Language" CONTENT="">
<META HTTP-EQUIV="Expires" CONTENT="">
<META NAME="Revisit-After" CONTENT="">
<META NAME="distribution" CONTENT="Global">
<META NAME="Robots" CONTENT="INDEX,FOLLOW">
<META NAME="country" CONTENT="">
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All the command which help you to get your website to best of the position if optimized properly as per SEO.