D

Dakota SEO and Design
Offers web site design, search engine optimization and consulting. Based in North Dakota.
http://www.rtfi.us/Concepts/

Daup
Offers positioning and marketing services. Located in Borgosesia, Italy.
http://www.daup.com/

Deadlock Design
Creates meta tags and titles for designated pages, promotes them on search engines. Monthly maintenance and upkeep.
http://www.deadlock.com/

Dgm
Provides search engine optimisation, marketing and banner advertising. Based in London, UK.
http://www.dgm-uk.com/

Digital Odyssey IT
Search engine optimization, positioning, directory placement and submission services. Seattle WA
http://www.digitalodysseyit.com/

Digital Road Consulting
Offers search engine optimization for small to medium sized businesses. Based in White River Junction, Vermont.
http://www.digitalroadconsulting.com/

DigitalWork
Offers submission service and banner ad placement. Chicago, Illinois, United States.
http://www.digitalwork.com/

Direct
Search engine optimisation services with monthly maintenance contracts and site paid listings.
http://www.directsubmit.co.uk/

Direct Hits
Website promotion and ranking services, customized keyword, keyphrase development, search engine submissions and positioning.
http://www.direct-hits.net/

Direct Traffic Ltd
Online marketing services to improve ranking and targeted traffic.
http://www.directtraffic.org/

Disc
Offers website design, optimization and other forms of promotion.
http://www.2disc.com/

DiTucci
Professional optimization and website promotion, offers a free search engine report.
http://www.ditucci.com/

DM Consulting
Canadian firm offers website design and optimizing services.
http://www.drivetraffic.ca/

DMIdeas.com, LLC
Customer loyalty and retention programs and social media, e-mail, and Internet marketing services from a California-based company.
http://www.dmideas.com

Dnpromoter
Offers web site marketing and promotion tools and services.
http://www.dnpromoter.com/

Domain Diffusion
Offers search engine positioning services and internet marketing.
http://www.domaindiffusion.com/

Donpatterson-designs.com
Optimizing and designing web sites for traffic, conversions and profitability.
http://www.donpatterson-designs.com/

DR Webdesign
Belgium based company provides search engine friendly website creation, website optimization and promotion.
http://www.dr-webdesign.be/

Dragonfly Freelance
Providing search engine optimization and marketing, link building, consulting, and copywriting services. Located in Timonium, Maryland.
http://www.dragonflyfreelance.com/

DreamSubmit
Offers site submission services.
http://www.dreamsubmit.net/

Dreamszsop
Provides web site optimization, monitoring and link submissions.
http://www.dreamszsop.com/

The Driver Group
Specializing in web site marketing and promotion services. Located in Chester, New Jersey.
http://www.drivergroupusa.com/

DWP
Offers search engine placement through website optimization, link popularity and position reporting.
http://www.dakovwebsitepromotion.com/

Dynamic Promotions
UK firm specializing in submission to all the major engines and directories.
http://www.dynamicpromotions.co.uk/