WordPress.com and other web development platforms automatically optimize your site for mobile devices, but don’t assume that your site will look the way you want it to on a desktop, a tablet and a phone. In some cases, beautiful layouts on a larger screen will be totally rearranged and may even be unintelligible on a smaller device. In one recent case, a graphic that I posted looked wonderful at its original size. However, it suddenly suggested an intimate female body part when it was shrunk down on an iPhone. I muttered out loud to no one in particular, “Glad I checked.”

You also want to check navigation. Are items clickable on a phone with just a thumb? If not, you’re likely to inhibit use of your call-to-action button, if you have one. Can users get to your blog and scroll through the articles fairly easily? Otherwise, your bounce rate (people who visit only one page on your site and then leave) may be unusually high on certain devices.

In addition to checking your website on multiple devices, be sure to check any important posts on Facebook, particularly if they have graphics attached. While Facebook has made great strides in unifying the interfaces among the three platforms, they’re always tweaking things, so it’s good to fire up your page from time to time in every configuration possible.

Finally, check your email campaign. Nothing’s more frustrating than preparing a swanky layout in Constant Contact only to find out that mobile users had a tough time with it.

In the meantime, if you haven’t optimized your site or any other part of your campaign for mobile, get on that right away. 92% of smartphone owners access the Internet daily from their devices (source: Google Mobile Planet), which means they could be looking at your hard work on a tiny screen right now.