Here is a selection of 25 useful plugins for your WordPress that covers different areas, from performance of the website to SEO and social media:
Enhancing content

Scribe SEO – instructs web writers how to tweak their content to get more search engine traffic, all while maintaining quality reader-focused copy
iflickr – allows to easily download Flickr photos that are licensed under Creative Commons to the local server for attaching to posts
Photo Dropper – lets you add Creative Commons licensed Photos to Your Posts from Flickr
WordPress Video Plugin – allows easy video embedding …

If your shop is running on a CRE Loaded platform, you should know that there is a security exploit reported: using a simple trick as a URL change allows any malicious user to access protected pages in the admin area without an admin password!
It’s been reported that all  CRE Loaded versions before 6.4.0a are exploitable.
In order to check if you are among the ones affected, change the URL /admin/login.php to admin/orders.php/login.php. If you can see your order histories, here is the security fix:

Edit the admin/includes/application_top.php file

Find the line:

$PHP_SELF = (isset($_SERVER['PHP_SELF']) …

comScore released an interesting global report providing an in-depth analysis of the female Internet user, highlighting key trends by Internet activity, worldwide region and digital channel. While some female behaviors are somewhat obvious, others are quite surprising. What we thought we knew about how moms, college girls, and retirees use the Web is constantly evolving. Here are some of the key findings:
Social networking is central to women’s Internet experience. Regardless of how much you believe that women are primarily communicators, networkers and facilitators, it’s clear they are embracing social networking …

When you finally find a free WordPress theme for your project, you might discover that it’s got loads of spammy links in the footer, and they seem to be encrypted. If you simply try to edit the footer file and delete them you’ll see that theme it’s not working anymore…
But, thanks to the guys from GetNetted, there is a magic trick to remove that encrypted links. And you don’t have to be a senior programmer in order to complete this task in less than 3 minutes. So, you can find …

Charles Nicholls, conversion & analytics expert, founder and chief strategy officer of SeeWhy, a conversion and cart-abandonment-recovery firm, started a detailed analysis of the Top 10 converting websites–which on average convert 23 percent of their visitors in the same session–and how they approach everything from merchandising to remarketing to identifying more visitors.
Here’s the list of the Top 10 converting websites, showing their rank, company name, industry sector and average six-month conversion rate.

Schwan’s, Food, 41.7 percent
ProFlowers, Flowers and gifts, 26.5 percent
Vitacost.com, Health and nutrition, 24.0 percent
Woman Within, Catalog /clothing, 22.4 percent
Blair, …